Why are you bothered only about terror attacks in the West and not about those taking place more near to you in Asia or Africa?
I am bothered when innocent people are killed anywhere in the World. I may be more bothered when it happens in places where such things never happen because it means violence is spreading. When it happens in liberal Western Europe with a secular democratic polity which opened its gates to thousands of refugees from war and terror torn countries, it bothers me more. I fear that it may result in closing of gates and hardening of attitudes towards Muslims. I fear it may result in strengthening of racist right wing political parties there. That in turn will strengthen the Islamists.